Electric air heater unit MTH series

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Product overview
KLC's MTH series PTC air heaters are self-regulating, aluminum-finned heating elements designed for rapid warm-up, automatic power reduction to prevent overheating and long operational life. Available in multiple voltages and power ratings, they are suitable for HVAC, electric vehicles, appliances and industrial equipment.

Key features

• Self-regulating technology: power decreases as temperature rises to avoid overheating.
• Fast heat-up: short time to operating temperature.
• Energy efficiency: minimizes energy consumption through self-regulation.
• Safety oriented: built-in overheat protection; external temperature controller not required for basic protection.
• Durability: stable PTC elements for extended service life.

Applications

• HVAC systems: residential and commercial heating support.
• Electric vehicles (EVs): cabin heating and battery compartment thermal management.
• Home appliances: dryers, air purifiers and portable heaters.
• Industrial equipment: process heating for machines and control cabinets.

Technical specifications (summary)

• Voltage range: 100 V–600 V (standard 110 V / 220 V)
• Power output: up to 2500 W (model dependent)
• Heating element: PTC thermistor
• Fin material: aluminum
• Safety approvals: UL, CSA (models listed are UL and CSA certified)
• Dimensions: custom sizes available

Part numbering & notes

• Power values in specification tables are based on fin pitch 1.68 mm (designation M) and single insulation (S).
• Double insulated models (D) typically have approximately 10% lower power than single-insulation values.
• Highlighted models in specification tables are standard items with shorter lead times.
• Customized wattage, lengths and specifications are available for large-volume orders.

Accessories / Assembly

• Available assembly options: heater plus temperature-resistant PPS brackets (example: MSH-65), thermostat, terminal wire set, fuse and mounting screws.

Certifications & compliance
All MTH type PTC air heaters are designed to international safety standards and carry UL and CSA certifications. Engineering support is available for validation and integration.

Important notes

• Standard models are more economical and have shorter delivery times.
• For high-volume purchases, KLC can provide custom designs for power, length and insulation.

Characteristics / technical specifications

• Series: MTH
• Voltage: 110 V / 220 V standard; customizable 100 V–600 V
• Max power: up to 2500 W (depends on model)
• Heating element: PTC thermistor
• Fin material: aluminum
• Insulation options: single (S) or double (D)